Widora-NEO OpenWrt WiFi IoT & Audio Board is Based on Mediatek MT7688 SoC, WM8960 Audio DAC

A couple of weeks ago, I reviewed ReSpeaker board combining MediaTek MT7688 WiFi SoC with WM8960 audio DAC, running OpenWrt, and allowing you to perform tasks using text-to-speech and speech-to-text thanks to the built-in microphone (or optional microphone array), and a 3.5mm audio jack to connect speakers, as well as several I/O pins. It turns out there’s been board with similar features, minus the built-in microphone, available in China for a while. Meet Widora-NEO.

Click to Enlarge
Click to Enlarge

Widora-NEO board specifications:

  • SoC – Mediatek MT7688AN MIPS SoC @ 580 MHz with built-in WiFi
  • System Memory – 128 MB RAM
  • Storage – 16MB SPI flash, micro SD card
  • Connectivity – 10/100M Ethernet, 802.11 b/g/n WiFi 1T1R up to 150 Mbps with PCB antenna, or IPEX connector
  • Audio – 3.5mm jack for stereo headphone and mono microphone, WM8960G audio codec
  • USB – 1x micro USB port for programming via CP2104 chip, 1x micro USB host (or is it OTG?) port.
  • Expansion headers
    • 19-pin P1 header with UART, GPIO, WPS, Ethernet LINK, I2S, GND, and 3.3V signals
    • 28-pin P2 header with SPI, GPIO, PWM, UART, SDIO, GND, 3.3V, and 5V signals
  • Misc – Reset and WPS buttons, some LEDs
  • Power Supply – 5V DC via micro USB port or header.
  • Dimensions – 76.20 x 35.56 mm

widora-open-source-hardwareThe board is running OpenWrt Chaos Calmer R4937 with Mediatek official closed-source drivers, support for AP and STA (APCLI0) modes.  I could also find some references to Node.JS in the pictures, and spotted some commits credited to bug fixes made on ReSpeaker OpenWrt. The back of the board features an “Open Source hardware” logo,  and while I could find OpenWrt and U-boot on their Github account, I was unable to find any hardware files. They also have a dedicated website with forums, but all information is only in Chinese at the time.

Block Diagram - Click to Enlarge
Widora-NEO Block Diagram – Click to Enlarge

The board will be much harder to play with compared to ReSpeaker for people who can’t read Chinese, but at the same time, it’s quite cheaper, as it sells for 99.00 RMB ($14.86), 106 RMB ($15.91) with OTG (cable?), or 140 RMB ($21) with a camera on Taobao. Widora-NEO is also listed on Aliexpress, but for $200 they probably don’t plan to sell it, still you will some more Google translated details on that page. The main developer also has a Twitter account, where he mentions an upcoming Widora-AIR based on Espressif ESP32.

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Roel
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Roel

I was just searching for a board like this. Does somebody know if there are usb expansion headers.

noone
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noone

Can you shop on Taobao from outside China? If so, are there any English guides with screenshots describing the process?

Nobody of Import
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Nobody of Import

They can’t claim “Open Source Hardware” without FOSS drivers- it’s a bald-faced LIE.

Miha
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Miha

Well you have onion2 with the same chip And only the uSD connector on the board, other pins are on the pin headers. This should work for you.

iamfrankenstein
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iamfrankenstein

@noone

i used http://dangerousprototypes.com/store/china_forwarding a few times. But you have to manage more then normale but really cheap.

TaobaoFocus
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@cnxsoft
Hello! Thanks for mentioning us.We can help you with ordering on Taobao and shipping abroad China. Please contact us if you will have questions about our service. By the way, we are working during the Festival, so you can contact us any time

Miha
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Miha

It seems that they have something more interesting Widora-BIT. Would really like to get my hands on this.
What I’m most interested in ATM is the power consumption without the WiFi on and with the wifi on. And the status/stability of open-wrt.

mango
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It has one microusb connector for Host,another one for ttl serial debug(cp2104 onboard) 🙂 @Roel

widora has open source openwrt in github.com/widora/openwrt_widora(but the Mediatek closed wifi driver,like onion2,linkit,they also use this driver,I now rebuild a strong and new .ko driver for widora,support AP,APCLI,Elian,Airkiss).open sch in pdf. if you want the open source wifi driver for MT7688,see github.com/openwrt/mt76 for some help 🙂@Nobody of Import

Jeff
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Jeff

@noone
I ever used Superbuy to buy electronic components from Taobao. This Taobao buying agent company offered reliable service and charged 0 service fee, the shipping rate, however, was a little expensive. You can visit its official site, https://www.superbuy.com, to learn more.